INDEX 



Miiller, J., "mosaic" theory of, in, 



425 



Murgantia, spread of, 382 

 Murray, 461 

 Musca, egg of, *i59 ; facets of, 32; 



fungus of, *258 ; moults, 165 ; ovum, 



*i46; in relation to typhoid fever, 



305 

 Muscidae, cardiac valve of, *iig; ima- 



ginal buds of, *i79, 181 

 Muscles, circular and longitudinal, 



*i2i ; of cockroach, *s6, *86 ; of leg, 



*55, *56 ; number, 85 ; structure, 



*87 ; of wing, 64, *65 

 Muscular, power, 88; system, 8s 

 Mutation theory, 247 ; versus natural 



selection, 249 



Miitilla, stridulation of, 104 

 Myriopoda, the term, 5 

 Myniiecocystns, *337 

 Myrmecodia, 275 

 Myrmecophana, mimicry by, *22Q 

 Myrmecophilism, 340 

 Myrmedonia, 343 

 Myrnicleon, digestive system of, *n8 ; 



predaceous, 308 ; silk glands, 85 

 Myrmica, *343 

 Mystacides, androconia of, 80 



Nagel, 428 



Nassonow, 438 



Natural selection, 238 



Nearctic realm, 375 



Necrophoms, 280, 314 



Needham, on digestion, 119; venation, 



58; 417, 431, 446. 455 

 Nemobins, leg of, *53 

 Neotropical realm, 375 

 Nepa, respiration of, 189 

 Nerves, of head, *9i ; structure, *93 

 Nervous system, 89 ; development of, 



151, *i54, "155 

 Nervures, 58 



Neuration, 58, *59, *6o, *6i 

 Neurilemma, *93 

 Neuroblasts, *i54 

 Neuromeres, defined, 45, 152; of head, 



*46, 90 



Neuroptera, defined, 16 ; metamor- 

 phosis of, 24, *i63 

 Newbigin, 449, 451 

 Newport, on metamorphosis, 183 ; 



muscles, 86; 414, 423, 424, 431, 



433, 434 

 Newton, 425 



Notolophus, olfactory organs of, 102 

 Notonecta, *i8s ; locomotion of, *i86; 



respiration, 189 



Notum, 47 



Xorins, 314, 395, 406 

 Nucleolus, 146 

 Number of insects, 27 

 Nusbaum, 437, 441 

 Nuttall, 456 

 Nymph, 159 



Oaks, insects of, 252 



Oberea, eyes of, 31 



Obtect pupa, 167, *i68 



Occipital foramen, *3o 



Occiput, 30 



Ocelli, *32 ; structure of, *io9 ; vision 

 by, 109 



Ockler, 417 



Ocular, neuromere, *46 ; segment, 45 



Odonata, abdominal segments of, 66 ; 

 copulation of, 71 ; defined, 13 ; 

 ocelli, 32 ; origin, 23 ; spiracles, 66 



Odors, 82 ; efficiency of, 298 



Odynenis, 268 



CEcanthus, abdominal appendages of, 

 67, *i52; embryo, *i52; stridula- 

 tion, 105 



(Ecodoma, 337 



CEcophylla, 333 



CEdipoda, dorsal vessel of, *i25 



CEneis, distribution of, 370 



CEnocytes, *i3i 



CEsophageal commissures, *gi 



CEsophagus, *ii7 



CEstridae, 278 



Olfactory organs, 98, *99, *ioo, *ioi 



Oligocene insects, 385, 389 



Oligotoma, *i2 



Ommatidium, 110, *ii2 



Onthophagus, mandible of, *38 



Orchelimuni, stridulation of, 105, 106 



Orders of insects, 8, 21, *25 



Orgyia, olfactory organs of, 102 ; para- 

 sites of, 312 



Oriental realm, 376 



Origin of Arthropods, *7 ; of insects, 6 



Orthoptera, abdominal segments of, 

 66: defined, *io ; origin, 22; stridu- 

 lation, 104, *io5, 106 



Osborn, 453 



Osmeterium, *82 



Osmia, 268 



Osmodcnna, cocoon of, 169 



Osten-Sacken, 422 



Ostium, *i25 



Oudemans, 438 



Oustalet, 434, 445 



Ovaries, 140, *i4i, *i42 



Ovariole, *i43 



Oviducts, 140, *i4i, *i42 



